Reflexagraph.



w. H. 0on5. REPLEXAGRAPH.

APPLICATION FILED APR. 20, 1912.

1 ,071 ,708, Patented Sept. 2, 1913.

wzzesses I awm 59222 24 Zzvrws/ WILLIAM H. CONE, OF MINNEAPOLIS, MINNESOTA.

REFLEXAGRAPH.

Specification of Letters Patent.

Patented Sept. 2,1913.

Application filed April 20, 1912. Serial No. 692,051.

To all whom it may concern:

Be it known that I, WILLIAn H. CONE, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Reflexagraphs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved apparatus for projecting signs, symbols, words, figures, or characters onto a sidewalk, wall, signboard, or the like, for advertising or other purposes, and to such ends, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims. To this improved apparatus I have given the coined name of reflexagraph.

In the preferred form of this improved apparatus, I employ a light projecting tube or barrel and a source of light, such as an arc lamp, in connection with means for antomatically presenting to the said tube a multiplicity or series of negatives, and an oscillatory reflector which causes the projected image or sign to travel upon the surface of the object against which it is projected.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a view in side elevation with some parts broken away and some parts sectioned showing the improved apparatus or reflexagraph; Fig. 2 is a detail in section on the line a 00 on Fig. 1; Fig. 3 is a detail in section on the line m m on Fig. 1; and, Fig. 4.

' is a view in elevation with parts broken away, showing the rotary negative holder.

In this preferred form of the apparatus, the light projecting tube is made up of axially alined tube sections 1, 2 and 3, the front end tube section 3 being frictionally telescoped into the tube section 2 and the tube together by a short bridge bar 5.

sections 1 and 2 being rigidly supported by legs 4 and longitudinally spaced but tied In the tube section 1 are condensing lenses 6, and in the outer end of the outer tube section 3 is a concavo convex lens 7 which serves to magnify the size of the object or image projected from the tube.

The numeral 8 indicates the casing and the numeral 9 the electrodes or carbons of an arc lamp, said lamp, as shown, being supported on a standard 10 and having the front side of its case 8 open into the tube section 1.

The numerals 11 and 12 indicate counter shafts shown as axially alined and journaled in the legs I and in a bifurcated hearing bracket 13.

The negative carrier is preferably in the form of a wheel or disk 14. secured to the counter shaft 12 and having a plurality of radial negative seats adapted to contain negative plates 15 on which the sign or object to be projected, is painted, printed, or otherwise applied. The negative plates 15 are of glass or other transparent material and, as shown, they are adapted to be slid into the radial seats 16 of the negative carrier and to be frictionally held therein.

The negative carrier 14 is so located on the shaft 12 that it works with quite close engagement between the longitudinally spaced ends of the fixed tube sections land 2, and when the said negative carrier is at rest, one or another of the negatives 15 will be properly alined with the light passage through the light projecting tube.

Between the legs of the bracket 13, the shaft 12 is provided with a small pinion 17 that is engaged by a segn'iental gear 13 shown as secured to a short counter shaft 19 journaled in the legs of the bracket 13. The gear 18 and pinion 17 constitute one form of what is known as a Geneva stop gear, and under continuous rotation of the shaft 19, the negative carrier 14; will be intermittently moved. Under the action of this intermittent gear, the negative carrier will. be held in stationary )osition throughout approximately seven-eighths of the rotation of the shaft 19 and will be given its intermittent step of movement during approximately the other one-eighth of the rotation of the said shaft 19. It will, there fore, be seen that most of the time the negative will be held in a stationary position in the light passage of the light projecting tube, and by a very quick movement, the one negative will be substituted for another.

Movably mounted in front of the light projecting tube is a reflector or mirror 20, shown as adjustably connected by 'a screw 21 to a link 22, the upper end of which, likewise, is adjustably connected by a screw 23 to the outer end of a long and approximately horizontal link 24:, the rear end of which, in turn, is adjustably connected by a screw 25 to the upper end of an oscillating lever 26. The said lever 26 is provided at its intermediateportion with a large bearing ring 27 that is mounted for oscillatory movements between retaining flanges 28 in the front end of the fixed tube section 2. The lower; end of the oscillatory lever is connected by a link 29 to a short crank 30 secured on the front end of the shaft 11. v

The parts 20, 22, 23, 24 and 26, noted, are adjustably connected as stated, but are adapted to be held in any relative adjustments by tightening the screws 21, 23, and 25. Thus it will be seen that the reflector 20 may be set at different angles and at different elevations in'respect to the light projecting tube, and that by oscillatory movements of the lever 26,, the said reflector may be caused to oscillate around the projected axis of the light projecting tube, and

without changing its position relative to.

the axis of the said tube. This oscillatory movement of the reflector will be produced automatically when the shaft 19 is driven and, also of course, the different negatives will be alternately and intermittently presented within the said light projecting tube. The said shaft 19 may be driven in various different ways and, as shown, it is provided at its end with a gear 31, to which power may be applied from a spring motor, an electric motor or any other suitable means.

The sign or object projected fro-m the negative through the light projecting tube and against the oblique reflector or mirror 20, will, by the latter, be reflected onto some object in the line of projection, such, for instance, as a side walk, and by the oscillas tory movements of the reflector, the sign or image will be caused to travel back and for-ti over the side walk or other object against which it is projected. A sign projected onto the side walk, for example, by this device will, when stationary, have the appearance of being painted or printed directly on the walk, but the movement of the sign on the above walk has the effect of drawing greater attention thereto. WVhen the crank 30 is moving in the vicinity of either dead center, in respect to the link 29, there is a time when the sign appears to stand still, or remain The above described device'or apparatus is'especially adapted for use as an advertis-c ing medium, and as such, has been found very valuable, but it is, nevertheless, capable of many other uses, not necessary for the purposes of this case to specifically note.

What I claim is 1. In a device of the kind described, the combination with'a light projecting barrel and a negative presented therein, 'of a reflector movably supported in line with the projected axis ofsaid barrel, and meansv for moving said reflector to cause the reflected image to travel over the object against which it is projected. c o. c

2. In a device of the kind described, the

combination with a light projecting barreland a negative presented therein, of-a reflector movably supported in line with the projected axis of said barrel, and means for oscillating said reflector to .cause the re-. ,flected image to travel over the object against which it is projected. a

3. In a device of the kind described, the

combination with a light projecting barrel,

of a lever mounted to oscillate on said barrel and around the axis thereof, means for auto matically oscillating said lever, and a re fiector supported from said lever in line -with the projected axis of said barrel, subof a lever mounted to oscillate on said barrel and around the axis thereof, means for auto matically oscillating said lever, and a. re:

flector supported from saidv lever in line .I

and aroundthe axis thereof, means for auto-c matically oscillating sald lever, and a -re-c flector supported from said lever in line with the projected axis of said barrel, the

said reflector being angularly and vertically adjustable in respect to the projected axis of said barrel.

6. In a device of the kind described, the combination With a light projecting barrel, of a negative holder adapted to present a plurality of negatives in succession, to the light passage of said barrel, a reflector supported in the line of the projected axis of said barrel, and automatic connections for 10 intermittently moving said negative holder and for oscillating said reflector.

In testimony whereof I affix my signature in presence of two Witnesses.

WILLIAM H. CONE. Witnesses:

HARRY D. Kinoonn, F. D. MERCHANT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

